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cert-manager: security advisories, deprecations and releases

Automates TLS certificates in Kubernetes.

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HIGH NEW THIS WEEK cert-manager releases · 28 Oct 2026

cert-manager v1.20.5 removes trust in compromised eMudhra CA

cert-manager v1.20.5 drops the compromised eMudhra CA trust, updates to Debian 13 and Go 1.26.10, and patches five HTTP/2 and other CVEs that were reachable in v1.20.4.

CVE-2026-116587 CVE-2026-56855 CVE-2026-78659 CVE-2026-78660 CVE-2026-78661 CVE-2026-78662 CVE-2026-78663 CVE-2026-78669 CVE-2026-97032 CVE-2026-97045
CRITICAL cert-manager releases · 23 Oct 2026

cert-manager v1.21.3 removes compromised eMudhra CA trust

cert-manager v1.21.3 removes the compromised emSign ECC Root CA - G3 certificate from base images and upgrades Go to 1.26.10 so crypto/x509 rejects chains through the bad intermediate.

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